if (document.images) {            // Active Images
            mn1on = new Image();
            mn1on.src = "/images/mn1on.gif";
			
            mn1off = new Image();
            mn1off.src = "/images/mn1off.gif";
}


// Function to 'activate' images.
function imgOn(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "on.src");
        }
}


// Function to 'deactivate' images.
function imgOff(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "off.src");
        }
}